It was all just one Entity. It was all one entity.
This realization was a significant blow. After all, it meant that when they had entered this place, they had literally entered the belly of a devil.
And everything within this giant complex devil was designed such that they could kill intruders so that they could be digested by the devil.
It was no wonder that the blood and guts after killing the devils could be so easily cleared by the dungeon. that was the devil body enjoying the meal.
Practically speaking, the devils within it were created in small spaces that had different time dilations for the specific purpose of aiding digestion for the main devil body, but at the same time, create the illusion that the combatants had any control in their fate in the first place.